I may be in the minority, but I always believed one of the best strengths of my CQB and Classic Green/Blue Star was the excellent diopter sights.
For shooting out to 200 yards I find them superior to just about any other iron sights to be found on other black rifles. I did add picatinny rails to them, but for the most part I don't use them that much. If I want to do some fast shooting with the CQB, I find the EoTech the best option for ranges out to 100 yards or so. It will work for longer ranges, but for fun plinking, I generally keep it under 100 yards.
One of the things I really like about the EoTech is that it offers, in my experience, just about the best sight picture of any of the current crop of red dot sights. If you can see the dot, put it on the target and pull the trigger, you're going to hit what you aimed at.
I don't find it "busy" and the rear/front sights aren't that obtrusive for my shooting style. I never really worried all that much about co-witnessing, as the closest I'm going to come to combat with it is a busy afternoon at the range.
As for cheekweld issues, I guess I'm lucky being blessed with a big melon, as I can obtain a comfortable cheek weld and proper sight picture without having to add a cheek piece to the stock.
I did purchase one when I first bought the rifle, but it sits in my reloading room unused for the most part.
As for using telescopic sights, I never bothered with one for the CQB, as the max range I'm shooting with it is 200M. I did mount a low-powered Leupold Mk 4 scope on the non-restricted models however. High rings took care of the rear diopter and again the 'big melon' saved me from having to add a cheekpiece for proper cheek weld. Works like a charm and is my favorite coyote hunting rig. I would've preferred to stick with just the irons, but many shots at 'yotes are well over 200M on the barrens in my area and my 35 year old eyes aren't as sharp as they were at 20.
I had talked myself out of buying another SIG, since I "needed" the carbine to complete the set and really didn't "need" another restricted, but looking at that 14.3" carbine it looks like its time to start another rifle fund.
That is one sweet looking rifle! Have to say the green furniture looks way nicer than the black too. Hope they stay with the green by the time I've got the mad money saved for another 'investment!'
